Question

Christmas disease is another name for :

• A. Haemophilia B
• B. Hepatitis B
• C. Down's syndrome
• D. Sleeping sickness

Answer 1

The correct option is A Haemophilia B

Hemophilia B is also known as factor IX deficiency or Christmas disease.
The disorder was first reported in the medical literature in 1952 in a patient with the name of Stephen Christmas.
It is a rare genetic disorder in which your blood doesn't clot properly as the body produces little or no factor IX. This leads to prolonged or spontaneous bleeding.